libraries

library(dplyr)
library(ggplot2)
library(nnet)
library(psych)
library(corrplot)
library(tidyverse)
package 㤼㸱tidyverse㤼㸲 was built under R version 3.5.3-- Attaching packages --------------------------------------- tidyverse 1.2.1 --
v tibble  2.1.3     v purrr   0.3.2
v tidyr   0.8.3     v stringr 1.4.0
v readr   1.3.1     v forcats 0.4.0
package 㤼㸱tibble㤼㸲 was built under R version 3.5.3package 㤼㸱tidyr㤼㸲 was built under R version 3.5.3package 㤼㸱readr㤼㸲 was built under R version 3.5.3package 㤼㸱purrr㤼㸲 was built under R version 3.5.3package 㤼㸱stringr㤼㸲 was built under R version 3.5.3package 㤼㸱forcats㤼㸲 was built under R version 3.5.3-- Conflicts ------------------------------------------ tidyverse_conflicts() --
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x dplyr::slice()      masks xgboost::slice()
x purrr::transpose()  masks data.table::transpose()
x purrr::when()       masks foreach::when()

Load data

data<- read.csv("C://Users/s137r4//Desktop//Analysisfile//Accident14_17.csv")
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data <- data[, -c(1)]

missing values

p<- function(x){sum(is.na(x))/length(x)*100}
apply(data, 2, p)
                                          X                              Accident_Index                       Location_Easting_OSGR 
                                0.000000000                                 0.000000000                                 0.010534305 
                     Location_Northing_OSGR                                   Longitude                                    Latitude 
                                0.010534305                                 0.006224816                                 0.006224816 
                               Police_Force                           Accident_Severity                          Number_of_Vehicles 
                                0.000000000                                 0.000000000                                 0.000000000 
                       Number_of_Casualties                                        Date                                 Day_of_Week 
                                0.000000000                                 0.000000000                                 0.000000000 
                                       Time                  Local_Authority_.District.                   Local_Authority_.Highway. 
                                0.000000000                                 0.000000000                                 0.000000000 
                            X1st_Road_Class                            X1st_Road_Number                                   Road_Type 
                                0.000000000                                 0.000000000                                 0.000000000 
                                Speed_limit                             Junction_Detail                            Junction_Control 
                                0.000000000                                 0.000000000                                 0.000000000 
                            X2nd_Road_Class                            X2nd_Road_Number           Pedestrian_Crossing.Human_Control 
                                0.000000000                                 0.000000000                                 0.000000000 
    Pedestrian_Crossing.Physical_Facilities                            Light_Conditions                          Weather_Conditions 
                                0.000000000                                 0.000000000                                 0.000000000 
                    Road_Surface_Conditions                  Special_Conditions_at_Site                         Carriageway_Hazards 
                                0.000000000                                 0.000000000                                 0.000000000 
                        Urban_or_Rural_Area Did_Police_Officer_Attend_Scene_of_Accident                   LSOA_of_Accident_Location 
                                0.000000000                                 0.000000000                                 0.000000000 
                          Vehicle_Reference                                Vehicle_Type                     Towing_and_Articulation 
                                0.000000000                                 0.000000000                                 0.000000000 
                          Vehicle_Manoeuvre            Vehicle_Location.Restricted_Lane                           Junction_Location 
                                0.000000000                                 0.000000000                                 0.000000000 
                   Skidding_and_Overturning                   Hit_Object_in_Carriageway                 Vehicle_Leaving_Carriageway 
                                0.000000000                                 0.000000000                                 0.000000000 
                 Hit_Object_off_Carriageway                        X1st_Point_of_Impact                Was_Vehicle_Left_Hand_Drive. 
                                0.000000000                                 0.000000000                                 0.000000000 
                  Journey_Purpose_of_Driver                               Sex_of_Driver                               Age_of_Driver 
                                0.000000000                                 0.000000000                                 0.000000000 
                         Age_Band_of_Driver                        Engine_Capacity_.CC.                             Propulsion_Code 
                                0.000000000                                 0.000000000                                 0.000000000 
                             Age_of_Vehicle                           Driver_IMD_Decile                       Driver_Home_Area_Type 
                                0.000000000                                 0.000000000                                 0.000000000 
                         Casualty_Reference                              Casualty_Class                             Sex_of_Casualty 
                                0.000000000                                 0.000000000                                 0.000000000 
                            Age_of_Casualty                        Age_Band_of_Casualty                           Casualty_Severity 
                                0.000000000                                 0.000000000                                 0.000000000 
                        Pedestrian_Location                         Pedestrian_Movement                               Car_Passenger 
                                0.000000000                                 0.000000000                                 0.000000000 
                     Bus_or_Coach_Passenger          Pedestrian_Road_Maintenance_Worker                               Casualty_Type 
                                0.000000000                                 0.000000000                                 0.000000000 
                    Casualty_Home_Area_Type                                        Year 
                                0.000000000                                 0.000000000 
colz <- c(7,11,15:31,34:48, 50:67)
data[, colz]<-lapply(data[, colz], factor)
by_year_count <- data %>% select(Accident_Index, Year) %>% group_by(Year) %>% summarise(total.count=n())%>% mutate(total.count = total.count/sum(total.count)*100)
by_year_count
chart_year <- ggplot(data=by_year_count, aes(x=Year, y=total.count, fill=Year)) + geom_bar(stat="identity")+geom_text(aes(label=paste0(round(total.count, 2),"%")),position=position_dodge(width=0.9), vjust=-0.25)
chart_year

by_yearsev <- data %>% select(Accident_Index, Year, Accident_Severity) %>% group_by(Year, Accident_Severity) %>% summarise(total.count=n())%>% mutate(total.count = total.count/sum(total.count)*100)
by_yearsev
chart_yearsev <- ggplot(data=by_yearsev, aes(x=Year, y=total.count, fill=Accident_Severity)) + geom_bar(stat="identity")+geom_text(aes(label=paste0(round(total.count, 2),"%")),position=position_stack(vjust=0.25))
chart_yearsev

recoding

data <- data %>%
  mutate(Vehicle_Manoeuvre_category=case_when(Vehicle_Manoeuvre %in% 1:5~"Low_speed_manoeuvre",
                          Vehicle_Manoeuvre %in% 6:10 ~ "Turning_Manoeuvre",
                          Vehicle_Manoeuvre %in% 11:15 ~ "Lane_change_Manoeuvre",
                          Vehicle_Manoeuvre %in% 16:18 ~ "Going_ahead_Manoeuvre"
                        ))
manaouvre<- data %>% select(Accident_Index, Vehicle_Manoeuvre_category)%>% group_by(Vehicle_Manoeuvre_category) %>% summarise(t_count = n())%>% drop_na(Vehicle_Manoeuvre_category)%>% mutate(t_count = t_count/sum(t_count)*100)
manaouvre
manuevsev<- data %>% select(Accident_Index,Accident_Severity, Vehicle_Manoeuvre_category)%>% group_by(Vehicle_Manoeuvre_category, Accident_Severity) %>% summarise(t_count = n())%>% drop_na(Vehicle_Manoeuvre_category)%>% mutate(t_count = t_count/sum(t_count)*100)
manuevsev
data<-data%>%
  filter(Urban_or_Rural_Area %in% 1:2)
data<-data%>%
  filter(Light_Conditions %in% 1:7)
#1-highway 2- other roads 
data <- data %>%
  mutate(Highway=case_when( X1st_Road_Class %in% 1:2~ 1,
                            X1st_Road_Class %in% 3:6 ~ 0))
# 1 - daylight and 2- darkness 
data <- data %>%
  mutate(Light_Cond=case_when(Light_Conditions ==1 ~ 1,
                              Light_Conditions %in% 2:7 ~ 0))
light<- data %>% select(Accident_Index, Light_Cond)%>% group_by(Light_Cond) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
light
light1<- data %>% select(Accident_Index, Light_Cond,Accident_Severity)%>% group_by(Light_Cond,Accident_Severity) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
light1
table(data$Light_Cond)

     0      1 
121617 296039 
table(data$Highway)

     0      1 
394659  22997 
data <- data %>%
  mutate(Weather_Cond=case_when(Weather_Conditions==1 ~1,
                                Weather_Conditions %in% 2:8 ~0
                                      ))
weather<- data %>% select(Accident_Index, Weather_Cond)%>% group_by(Weather_Cond) %>% summarise(t_count = n())%>% drop_na(Weather_Cond)%>%  mutate(t_count = t_count/sum(t_count)*100)
weather
weather2<- data %>% select(Accident_Index, Weather_Cond,Accident_Severity)%>% group_by(Weather_Cond,Accident_Severity) %>% summarise(t_count = n())%>% drop_na(Weather_Cond) %>% mutate(t_count = t_count/sum(t_count)*100)
weather2
table(data$Highway)

     0      1 
394659  22997 
data <- data %>%
  mutate(Road_Surface_Cond=case_when(Road_Surface_Conditions==1 ~1,
                                      Road_Surface_Conditions %in% 2:7 ~0
                                     ))
#1- dry and 2- wet
table(data$Road_Surface_Cond)

     0      1 
129537 286113 
Road_Sc<- data %>% select(Accident_Index,Road_Surface_Cond)%>% group_by(Road_Surface_Cond)%>% drop_na(Road_Surface_Cond) %>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
Road_Sc
Road_Sc1<- data %>% select(Accident_Index,Road_Surface_Cond,Accident_Severity)%>% group_by(Road_Surface_Cond,Accident_Severity)%>% drop_na(Road_Surface_Cond) %>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
Road_Sc1
data <- data %>%
  mutate(Area=case_when(Urban_or_Rural_Area==1& Highway==1 ~ "Highway",
                        Urban_or_Rural_Area==2& Highway==1 ~"Highway",
                        Urban_or_Rural_Area==1& Highway==0 ~ "Urban",
                        Urban_or_Rural_Area==2& Highway==0 ~ "Rural"))
table(data$Area)

Highway   Rural   Urban 
  22997  149779  244880 
areads<- data %>% select(Accident_Index,Area)%>% group_by(Area) %>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
areads
areads1<- data %>% select(Accident_Index,Area,Accident_Severity)%>% group_by(Area,Accident_Severity) %>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
areads1
data <- data %>%
  mutate(spd_lt=case_when(Speed_limit %in% 1:20 ~"0-30",
                          Speed_limit %in% 20:30 ~ "30-60",
                          Speed_limit %in% 40:60 ~"60-100",
                          Speed_limit == 70 ~"100-130"))
table(data$spd_lt)

   0-30 100-130   30-60  60-100 
 113875   28838  178895   96048 
spdlt<- data %>% select(Accident_Index,spd_lt)%>% group_by(spd_lt) %>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
spdlt
spdlt1<- data %>% select(Accident_Index,spd_lt,Accident_Severity)%>% group_by(spd_lt,Accident_Severity) %>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
spdlt1
data <- data %>%
  mutate(Hit_object_on_carraige_way =case_when(Hit_Object_in_Carriageway == 1 ~ 1,
                          Hit_Object_in_Carriageway == 2 ~ 0,
                          Hit_Object_in_Carriageway == 4 ~ 1,
                          Hit_Object_in_Carriageway == 5:7 ~ 0,
                          Hit_Object_in_Carriageway == 9:12 ~ 0,
                          Hit_Object_in_Carriageway == 8 ~ 1,
                          Hit_Object_in_Carriageway == 0 ~ 0,
                          Hit_Object_in_Carriageway == 2 ~ 0,))

table(data$Hit_object_on_carraige_way)
obstacle<- data %>% select(Accident_Index,Hit_object_on_carraige_way)%>% group_by(Hit_object_on_carraige_way) %>% drop_na(Hit_object_on_carraige_way)%>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
obstacle
obstacle1<- data %>% select(Accident_Index,Hit_object_on_carraige_way,Accident_Severity,)%>% group_by(Hit_object_on_carraige_way,Accident_Severity) %>% drop_na(Hit_object_on_carraige_way)%>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
obstacle1
data<-data%>%
  filter(X1st_Point_of_Impact %in% 0:4)
table(data$X1st_Point_of_Impact)
impact<- data %>% select(Accident_Index,X1st_Point_of_Impact)%>% group_by(X1st_Point_of_Impact) %>% drop_na(X1st_Point_of_Impact)%>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
impact
impact1<- data %>% select(Accident_Index,X1st_Point_of_Impact,Accident_Severity)%>% group_by(X1st_Point_of_Impact,Accident_Severity) %>% drop_na(X1st_Point_of_Impact)%>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
impact1

pedestrian movement

data <- data %>%
  mutate(Pedestrian_Mvt=case_when(Pedestrian_Movement %in%  1:4 ~1,
                                  Pedestrian_Movement %in%  5:9 ~0,
                                  Pedestrian_Movement ==  0 ~0
                                      ))
table(data$Pedestrian_Mvt)
pedmove<- data %>% select(Accident_Index,Pedestrian_Mvt)%>% group_by(Pedestrian_Mvt)%>%  drop_na(Pedestrian_Mvt)%>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
pedmove
pedmove1<- data %>% select(Accident_Index,Pedestrian_Mvt,Accident_Severity)%>% group_by(Pedestrian_Mvt,Accident_Severity)%>%  drop_na(Pedestrian_Mvt)%>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
pedmove1

Casualty type


table(data$Casualty_Type)

casualty class this tow are interchangable and casaulty type

castyp<- data %>% select(Accident_Index,Casualty_Class)%>% group_by(Casualty_Class)%>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
castyp
castyp1<- data %>% select(Accident_Index,Casualty_Class,Accident_Severity)%>% group_by(Casualty_Class,Accident_Severity)%>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
castyp1

by variate analysis

highway_urban <- data %>% select(Accident_Index, Urban_or_Rural_Area, Highway )%>% group_by(Urban_or_Rural_Area, Highway ) %>% summarise(t_count = n())
highway_urban
chart_highway_urban<- ggplot(data=highway_urban, aes(x=Highway, y=t_count, fill=Urban_or_Rural_Area))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2))), position = position_stack(vjust=0.9))+labs(y="Number of accidents", x= "Road type")+ scale_fill_discrete(name= "Area", labels=c("Urban", "Rural"))+
  theme(legend.position="bottom", legend.direction="horizontal",
        legend.title = element_blank())+ scale_fill_manual(values =c("#00BFFF", "#1E90FF"))
Scale for 'fill' is already present. Adding another scale for 'fill', which will replace the existing scale.
chart_highway_urban

area

areasev<- data %>% select(Accident_Index,Accident_Severity, Area)%>% group_by(Accident_Severity,Area) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
areasev
chart_areasev<- ggplot(data=areasev, aes(x=Accident_Severity, y=t_count, fill= Area))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2), "%")), position = position_stack(vjust=0.9))+labs(y="Percentage", x= "Accident severity")+ scale_fill_discrete(name= "Area", labels=c("Higheway", "Urban", "Rural"))+
  theme(legend.position="bottom", legend.direction="horizontal",
        legend.title = element_blank())#+scale_fill_brewer(palette = "Set2") #scale_fill_manual(values =c("#00BFFF", "#1E90FF", "#4169E1"))
chart_areasev

manuevsev<- data %>% select(Accident_Index,Accident_Severity, Vehicle_Manoeuvre_category)%>% group_by(Vehicle_Manoeuvre_category, Accident_Severity) %>% summarise(t_count = n())%>% drop_na(Vehicle_Manoeuvre_category)%>% mutate(t_count = t_count/sum(t_count)*100)
manuevsev

ADAS classification

data <- data %>%
  mutate(accident_type=case_when(Vehicle_Manoeuvre_category=="Going_ahead_Manoeuvre"& X1st_Point_of_Impact==1 & Number_of_Vehicles==2 & Junction_Detail==0 ~ "Rear-end collision",
                        Vehicle_Manoeuvre_category=="Turning_Manoeuvre" & X1st_Point_of_Impact %in% 3:4 & Number_of_Vehicles==2 &Junction_Detail %in% 1:9 ~ "Turning collision",
                        Vehicle_Manoeuvre_category=="Going_ahead_Manoeuvre" & Number_of_Vehicles==2 & X1st_Point_of_Impact %in% 2:3 &Junction_Detail %in% 1:9 ~ "Entering/crossing collision",
                        Vehicle_Manoeuvre_category=="Lane_change_Manoeuvre" & Hit_object_on_carraige_way==1 ~ "Collision with stationary traffic",
                        Vehicle_Manoeuvre_category=="Lane_change_Manoeuvre"& X1st_Point_of_Impact %in% 3:4 ~"collision with longitunal traffic",
                        Pedestrian_Mvt ==1 & Casualty_Class==3 ~ "Accident with pedestrian crossing the road",
                        Hit_object_on_carraige_way==1 & X1st_Point_of_Impact ==1 ~"Accident with other obsctacles on the carriageway"
                        ))
table(data$accident_type)

Accident with other obsctacles on the carriageway        Accident with pedestrian crossing the road                 collision with longitunal traffic 
                                             3547                                             50843                                              5272 
                Collision with stationary traffic                       Entering/crossing collision                                Rear-end collision 
                                              596                                             17666                                             31601 
                                Turning collision 
                                            15309 
acctype<- data %>% select(Accident_Index,accident_type  )%>% group_by(accident_type) %>% summarise(t_count = n())%>%drop_na(accident_type)%>% mutate(t_count = t_count/sum(t_count)*100)
acctype
chart_acctype<- ggplot(data=acctype, aes(x=accident_type , y=t_count, fill= accident_type ))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2), "%")),position=position_dodge(width=0.9), vjust=-0.25)
chart_acctype

acctypearea<- data %>% select(Accident_Index,Area,accident_type)%>% group_by(accident_type,Area) %>% drop_na(accident_type) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
acctypearea
chart_acctypearea<- ggplot(data=acctypearea, aes(x=accident_type, y=t_count, fill= Area ))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2), "%")),position=position_stack(vjust=0.9))+labs(y="Percent %", x= "Accident Type")+ scale_fill_discrete(name= "Area", labels=c("Highway", "Urban", "Rural"))
chart_acctypearea

acctypspeed<- data %>% select(Accident_Index,spd_lt,accident_type)%>% group_by(accident_type,spd_lt) %>% drop_na(accident_type) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
acctypspeed
chart_acctypspeed<- ggplot(data=acctypspeed, aes(x=accident_type, y=t_count, fill= spd_lt ))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2), "%")),position=position_stack(vjust=0.9))+labs(y="Percent %", x= "Accident Type") #scale_fill_discrete(name= "Area", labels=c("Highway", "Urban", "Rural"))
chart_acctypspeed

severity, just slight and fatal as ADAS can not do much about slight

acctypsev<- data %>% select(Accident_Index,Accident_Severity,accident_type)%>% group_by(accident_type,Accident_Severity) %>% drop_na(accident_type) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
acctypsev
chart_acctypsev<- ggplot(data=acctypsev, aes(x=accident_type, y=t_count, fill=Accident_Severity ))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2), "%")),position=position_stack(vjust=0.9))+labs(y="Percent %", x= "Accident Type") #scale_fill_discrete(name= "Area", labels=c("Highway", "Urban", "Rural"))
chart_acctypsev

acctypall<- data %>% select(Accident_Index,Accident_Severity,accident_type, Area, spd_lt)%>% group_by(accident_type,Area, spd_lt,Accident_Severity) %>% drop_na(accident_type) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
acctypall
dataa1 <- data
filter(dataa1, Age_of_Vehicle < 5 & Accident_Severity !=3) 
㤼㸱<㤼㸲 not meaningful for factors
NA
dataa1<-dataa1 %>%
  filter(Age_of_Vehicle %in% 1:6 & Accident_Severity %in% 1:2)
acctypall2<- dataa1 %>% select(Accident_Index,Accident_Severity,accident_type, Area, spd_lt)%>% group_by(accident_type,Area, spd_lt,Accident_Severity) %>% drop_na(accident_type) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
acctypall2
acctype1<- dataa1 %>% select(Accident_Index,accident_type  )%>% group_by(accident_type) %>% summarise(t_count = n())%>%drop_na(accident_type)%>% mutate(t_count = t_count/sum(t_count)*100)
acctype
chart_acctype1<- ggplot(data=acctype1, aes(x=accident_type , y=t_count, fill= accident_type ))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2), "%")),position=position_dodge(width=0.9), vjust=-0.25)
chart_acctype1

acctypspeed1<- dataa1 %>% select(Accident_Index,spd_lt,accident_type)%>% group_by(accident_type,spd_lt) %>% drop_na(accident_type) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
acctypspeed1
chart_acctypspeed1<- ggplot(data=acctypspeed1, aes(x=accident_type, y=t_count, fill= spd_lt ))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2), "%")),position=position_stack(vjust=0.9))+labs(y="Percent %", x= "Accident Type") #scale_fill_discrete(name= "Area", labels=c("Highway", "Urban", "Rural"))
chart_acctypspeed1

acctypsev1<- dataa1 %>% select(Accident_Index,Accident_Severity,accident_type)%>% group_by(accident_type,Accident_Severity) %>% drop_na(accident_type) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
acctypsev
chart_acctypsev1<- ggplot(data=acctypsev1, aes(x=accident_type, y=t_count, fill=Accident_Severity ))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2), "%")),position=position_stack(vjust=0.9))+labs(y="Percent %", x= "Accident Type") #scale_fill_discrete(name= "Area", labels=c("Highway", "Urban", "Rural"))
chart_acctypsev1

acctypearea1<- dataa1 %>% select(Accident_Index,Area,accident_type)%>% group_by(accident_type,Area) %>% drop_na(accident_type) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
acctypearea1
chart_acctypearea1<- ggplot(data=acctypearea1, aes(x=accident_type, y=t_count, fill= Area ))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2), "%")),position=position_stack(vjust=0.9))+labs(y="Percent %", x= "Accident Type")+ scale_fill_discrete(name= "Area", labels=c("Highway", "Urban", "Rural"))
chart_acctypearea1

---
title: "R Notebook"
output: html_notebook
---

libraries 
```{r}
library(dplyr)
library(ggplot2)
library(nnet)
library(psych)
library(corrplot)
library(tidyverse)


```

Load data
```{r}
data<- read.csv("C://Users/s137r4//Desktop//Analysisfile//Accident14_17.csv")
data <- data[, -c(1)]

```

missing values 
```{r}
p<- function(x){sum(is.na(x))/length(x)*100}
apply(data, 2, p)
```

```{r}
colz <- c(7,11,15:31,34:48, 50:67)
data[, colz]<-lapply(data[, colz], factor)
```




```{r}
by_year_count <- data %>% select(Accident_Index, Year) %>% group_by(Year) %>% summarise(total.count=n())%>% mutate(total.count = total.count/sum(total.count)*100)
by_year_count

chart_year <- ggplot(data=by_year_count, aes(x=Year, y=total.count, fill=Year)) + geom_bar(stat="identity")+geom_text(aes(label=paste0(round(total.count, 2),"%")),position=position_dodge(width=0.9), vjust=-0.25)
chart_year
```




```{r}

by_yearsev <- data %>% select(Accident_Index, Year, Accident_Severity) %>% group_by(Year, Accident_Severity) %>% summarise(total.count=n())%>% mutate(total.count = total.count/sum(total.count)*100)
by_yearsev

chart_yearsev <- ggplot(data=by_yearsev, aes(x=Year, y=total.count, fill=Accident_Severity)) + geom_bar(stat="identity")+geom_text(aes(label=paste0(round(total.count, 2),"%")),position=position_stack(vjust=0.25))
chart_yearsev
```



recoding 
```{r}
data <- data %>%
  mutate(Vehicle_Manoeuvre_category=case_when(Vehicle_Manoeuvre %in% 1:5~"Low_speed_manoeuvre",
                          Vehicle_Manoeuvre %in% 6:10 ~ "Turning_Manoeuvre",
                          Vehicle_Manoeuvre %in% 11:15 ~ "Lane_change_Manoeuvre",
                          Vehicle_Manoeuvre %in% 16:18 ~ "Going_ahead_Manoeuvre"
                        ))

```

```{r}
manaouvre<- data %>% select(Accident_Index, Vehicle_Manoeuvre_category)%>% group_by(Vehicle_Manoeuvre_category) %>% summarise(t_count = n())%>% drop_na(Vehicle_Manoeuvre_category)%>% mutate(t_count = t_count/sum(t_count)*100)
manaouvre
```
```{r}
manuevsev<- data %>% select(Accident_Index,Accident_Severity, Vehicle_Manoeuvre_category)%>% group_by(Vehicle_Manoeuvre_category, Accident_Severity) %>% summarise(t_count = n())%>% drop_na(Vehicle_Manoeuvre_category)%>% mutate(t_count = t_count/sum(t_count)*100)
manuevsev

```



```{r}
data<-data%>%
  filter(Urban_or_Rural_Area %in% 1:2)
data<-data%>%
  filter(Light_Conditions %in% 1:7)

#1-highway 2- other roads 
data <- data %>%
  mutate(Highway=case_when( X1st_Road_Class %in% 1:2~ 1,
                            X1st_Road_Class %in% 3:6 ~ 0))

# 1 - daylight and 2- darkness 
data <- data %>%
  mutate(Light_Cond=case_when(Light_Conditions ==1 ~ 1,
                              Light_Conditions %in% 2:7 ~ 0))

```

```{r}
light<- data %>% select(Accident_Index, Light_Cond,)%>% group_by(Light_Cond) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
light
```

```{r}
light1<- data %>% select(Accident_Index, Light_Cond,Accident_Severity)%>% group_by(Light_Cond,Accident_Severity) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
light1

```


```{r}
table(data$Light_Cond)
```

```{r}
table(data$Highway)
```

```{r}
data <- data %>%
  mutate(Weather_Cond=case_when(Weather_Conditions==1 ~1,
                                Weather_Conditions %in% 2:8 ~0
                                      ))



```

```{r}
weather<- data %>% select(Accident_Index, Weather_Cond)%>% group_by(Weather_Cond) %>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
weather
```
```{r}
weather2<- data %>% select(Accident_Index, Weather_Cond,Accident_Severity)%>% group_by(Weather_Cond,Accident_Severity) %>% summarise(t_count = n())%>% drop_na(Weather_Cond) %>% mutate(t_count = t_count/sum(t_count)*100)
weather2
```


```{r}
table(data$Highway)
```


```{r}

data <- data %>%
  mutate(Road_Surface_Cond=case_when(Road_Surface_Conditions==1 ~1,
                                      Road_Surface_Conditions %in% 2:7 ~0
                                     ))
#1- dry and 2- wet
table(data$Road_Surface_Cond)
```
```{r}
Road_Sc<- data %>% select(Accident_Index,Road_Surface_Cond)%>% group_by(Road_Surface_Cond)%>% drop_na(Road_Surface_Cond) %>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
Road_Sc

```
```{r}
Road_Sc1<- data %>% select(Accident_Index,Road_Surface_Cond,Accident_Severity)%>% group_by(Road_Surface_Cond,Accident_Severity)%>% drop_na(Road_Surface_Cond) %>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
Road_Sc1
```




```{r}


data <- data %>%
  mutate(Area=case_when(Urban_or_Rural_Area==1& Highway==1 ~ "Highway",
                        Urban_or_Rural_Area==2& Highway==1 ~"Highway",
                        Urban_or_Rural_Area==1& Highway==0 ~ "Urban",
                        Urban_or_Rural_Area==2& Highway==0 ~ "Rural"))

table(data$Area)
```



```{r}
areads<- data %>% select(Accident_Index,Area)%>% group_by(Area) %>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
areads
```

```{r}
areads1<- data %>% select(Accident_Index,Area,Accident_Severity)%>% group_by(Area,Accident_Severity) %>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
areads1
```


```{r}
data <- data %>%
  mutate(spd_lt=case_when(Speed_limit %in% 1:20 ~"0-30",
                          Speed_limit %in% 20:30 ~ "30-60",
                          Speed_limit %in% 40:60 ~"60-100",
                          Speed_limit == 70 ~"100-130"))
table(data$spd_lt)

```
```{r}
spdlt<- data %>% select(Accident_Index,spd_lt)%>% group_by(spd_lt) %>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
spdlt

```

```{r}
spdlt1<- data %>% select(Accident_Index,spd_lt,Accident_Severity)%>% group_by(spd_lt,Accident_Severity) %>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
spdlt1

```


```{r}
data <- data %>%
  mutate(Hit_object_on_carraige_way =case_when(Hit_Object_in_Carriageway == 1 ~ 1,
                          Hit_Object_in_Carriageway == 2 ~ 0,
                          Hit_Object_in_Carriageway == 4 ~ 1,
                          Hit_Object_in_Carriageway == 5:7 ~ 0,
                          Hit_Object_in_Carriageway == 9:12 ~ 0,
                          Hit_Object_in_Carriageway == 8 ~ 1,
                          Hit_Object_in_Carriageway == 0 ~ 0,
                          Hit_Object_in_Carriageway == 2 ~ 0,))

table(data$Hit_object_on_carraige_way)
```


```{r}
obstacle<- data %>% select(Accident_Index,Hit_object_on_carraige_way)%>% group_by(Hit_object_on_carraige_way) %>% drop_na(Hit_object_on_carraige_way)%>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
obstacle

```

```{r}
obstacle1<- data %>% select(Accident_Index,Hit_object_on_carraige_way,Accident_Severity,)%>% group_by(Hit_object_on_carraige_way,Accident_Severity) %>% drop_na(Hit_object_on_carraige_way)%>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
obstacle1
```


```{r}
data<-data%>%
  filter(X1st_Point_of_Impact %in% 0:4)

```
```{r}
table(data$X1st_Point_of_Impact)
```

```{r}
impact<- data %>% select(Accident_Index,X1st_Point_of_Impact)%>% group_by(X1st_Point_of_Impact) %>% drop_na(X1st_Point_of_Impact)%>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
impact

```

```{r}
impact1<- data %>% select(Accident_Index,X1st_Point_of_Impact,Accident_Severity)%>% group_by(X1st_Point_of_Impact,Accident_Severity) %>% drop_na(X1st_Point_of_Impact)%>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
impact1
```


pedestrian movement 
```{r}
data <- data %>%
  mutate(Pedestrian_Mvt=case_when(Pedestrian_Movement %in%  1:4 ~1,
                                  Pedestrian_Movement %in%  5:9 ~0,
                                  Pedestrian_Movement ==  0 ~0
                                      ))
table(data$Pedestrian_Mvt)
```


```{r}
pedmove<- data %>% select(Accident_Index,Pedestrian_Mvt)%>% group_by(Pedestrian_Mvt)%>%  drop_na(Pedestrian_Mvt)%>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
pedmove
```

```{r}

pedmove1<- data %>% select(Accident_Index,Pedestrian_Mvt,Accident_Severity)%>% group_by(Pedestrian_Mvt,Accident_Severity)%>%  drop_na(Pedestrian_Mvt)%>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
pedmove1
```

Casualty type 
```{r}

table(data$Casualty_Type)
```



casualty class this tow are interchangable and casaulty type
```{r}
castyp<- data %>% select(Accident_Index,Casualty_Class)%>% group_by(Casualty_Class)%>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
castyp
```


```{r}
castyp1<- data %>% select(Accident_Index,Casualty_Class,Accident_Severity)%>% group_by(Casualty_Class,Accident_Severity)%>% summarise(t_count = n())%>%  mutate(t_count = t_count/sum(t_count)*100)
castyp1
```


by variate analysis 


```{r}

highway_urban <- data %>% select(Accident_Index, Urban_or_Rural_Area, Highway )%>% group_by(Urban_or_Rural_Area, Highway ) %>% summarise(t_count = n())
highway_urban
chart_highway_urban<- ggplot(data=highway_urban, aes(x=Highway, y=t_count, fill=Urban_or_Rural_Area))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2))), position = position_stack(vjust=0.9))+labs(y="Number of accidents", x= "Road type")+ scale_fill_discrete(name= "Area", labels=c("Urban", "Rural"))+
  theme(legend.position="bottom", legend.direction="horizontal",
        legend.title = element_blank())+ scale_fill_manual(values =c("#00BFFF", "#1E90FF"))

chart_highway_urban
```


area 

```{r}

areasev<- data %>% select(Accident_Index,Accident_Severity, Area)%>% group_by(Accident_Severity,Area) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
areasev
chart_areasev<- ggplot(data=areasev, aes(x=Accident_Severity, y=t_count, fill= Area))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2), "%")), position = position_stack(vjust=0.9))+labs(y="Percentage", x= "Accident severity")+ scale_fill_discrete(name= "Area", labels=c("Higheway", "Urban", "Rural"))+
  theme(legend.position="bottom", legend.direction="horizontal",
        legend.title = element_blank())#+scale_fill_brewer(palette = "Set2") #scale_fill_manual(values =c("#00BFFF", "#1E90FF", "#4169E1"))

chart_areasev
```


```{r}
manuevsev<- data %>% select(Accident_Index,Accident_Severity, Vehicle_Manoeuvre_category)%>% group_by(Vehicle_Manoeuvre_category, Accident_Severity) %>% summarise(t_count = n())%>% drop_na(Vehicle_Manoeuvre_category)%>% mutate(t_count = t_count/sum(t_count)*100)
manuevsev


```


############# ADAS classification 
```{r}
data <- data %>%
  mutate(accident_type=case_when(Vehicle_Manoeuvre_category=="Going_ahead_Manoeuvre"& X1st_Point_of_Impact==1 & Number_of_Vehicles==2 & Junction_Detail==0 ~ "Rear-end collision",
                        Vehicle_Manoeuvre_category=="Turning_Manoeuvre" & X1st_Point_of_Impact %in% 3:4 & Number_of_Vehicles==2 &Junction_Detail %in% 1:9 ~ "Turning collision",
                        Vehicle_Manoeuvre_category=="Going_ahead_Manoeuvre" & Number_of_Vehicles==2 & X1st_Point_of_Impact %in% 2:3 &Junction_Detail %in% 1:9 ~ "Entering/crossing collision",
                        Vehicle_Manoeuvre_category=="Lane_change_Manoeuvre" & Hit_object_on_carraige_way==1 ~ "Collision with stationary traffic",
                        Vehicle_Manoeuvre_category=="Lane_change_Manoeuvre"& X1st_Point_of_Impact %in% 3:4 ~"collision with longitunal traffic",
                        Pedestrian_Mvt ==1 & Casualty_Class==3 ~ "Accident with pedestrian crossing the road",
                        Hit_object_on_carraige_way==1 & X1st_Point_of_Impact ==1 ~"Accident with other obsctacles on the carriageway"
                        ))
```

```{r}
table(data$accident_type)

```

```{r}
acctype<- data %>% select(Accident_Index,accident_type  )%>% group_by(accident_type) %>% summarise(t_count = n())%>%drop_na(accident_type)%>% mutate(t_count = t_count/sum(t_count)*100)
acctype
chart_acctype<- ggplot(data=acctype, aes(x=accident_type , y=t_count, fill= accident_type ))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2), "%")),position=position_dodge(width=0.9), vjust=-0.25)
chart_acctype
```

```{r}
acctypearea<- data %>% select(Accident_Index,Area,accident_type)%>% group_by(accident_type,Area) %>% drop_na(accident_type) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
acctypearea
chart_acctypearea<- ggplot(data=acctypearea, aes(x=accident_type, y=t_count, fill= Area ))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2), "%")),position=position_stack(vjust=0.9))+labs(y="Percent %", x= "Accident Type")+ scale_fill_discrete(name= "Area", labels=c("Highway", "Urban", "Rural"))

chart_acctypearea
```
```{r}
acctypspeed<- data %>% select(Accident_Index,spd_lt,accident_type)%>% group_by(accident_type,spd_lt) %>% drop_na(accident_type) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
acctypspeed
chart_acctypspeed<- ggplot(data=acctypspeed, aes(x=accident_type, y=t_count, fill= spd_lt ))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2), "%")),position=position_stack(vjust=0.9))+labs(y="Percent %", x= "Accident Type") #scale_fill_discrete(name= "Area", labels=c("Highway", "Urban", "Rural"))

chart_acctypspeed
```
severity, just slight and fatal as ADAS can not do much about slight
```{r}
acctypsev<- data %>% select(Accident_Index,Accident_Severity,accident_type)%>% group_by(accident_type,Accident_Severity) %>% drop_na(accident_type) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
acctypsev
chart_acctypsev<- ggplot(data=acctypsev, aes(x=accident_type, y=t_count, fill=Accident_Severity ))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2), "%")),position=position_stack(vjust=0.9))+labs(y="Percent %", x= "Accident Type") #scale_fill_discrete(name= "Area", labels=c("Highway", "Urban", "Rural"))

chart_acctypsev

```

```{r}
acctypall<- data %>% select(Accident_Index,Accident_Severity,accident_type, Area, spd_lt)%>% group_by(accident_type,Area, spd_lt,Accident_Severity) %>% drop_na(accident_type) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
acctypall

```

```{r}
dataa1 <- data

dataa1filter(dataa1, Age_of_Vehicle < 5 & Accident_Severity !=3) 
  
```

```{r}
dataa1<-dataa1 %>%
  filter(Age_of_Vehicle %in% 1:6 & Accident_Severity %in% 1:2)
```


```{r}
acctypall2<- dataa1 %>% select(Accident_Index,Accident_Severity,accident_type, Area, spd_lt)%>% group_by(accident_type,Area, spd_lt,Accident_Severity) %>% drop_na(accident_type) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
acctypall2
```

```{r}
acctype1<- dataa1 %>% select(Accident_Index,accident_type  )%>% group_by(accident_type) %>% summarise(t_count = n())%>%drop_na(accident_type)%>% mutate(t_count = t_count/sum(t_count)*100)
acctype
chart_acctype1<- ggplot(data=acctype1, aes(x=accident_type , y=t_count, fill= accident_type ))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2), "%")),position=position_dodge(width=0.9), vjust=-0.25)
chart_acctype1
```
```{r}
acctypspeed1<- dataa1 %>% select(Accident_Index,spd_lt,accident_type)%>% group_by(accident_type,spd_lt) %>% drop_na(accident_type) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
acctypspeed1
chart_acctypspeed1<- ggplot(data=acctypspeed1, aes(x=accident_type, y=t_count, fill= spd_lt ))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2), "%")),position=position_stack(vjust=0.9))+labs(y="Percent %", x= "Accident Type") #scale_fill_discrete(name= "Area", labels=c("Highway", "Urban", "Rural"))

chart_acctypspeed1

```
```{r}
acctypsev1<- dataa1 %>% select(Accident_Index,Accident_Severity,accident_type)%>% group_by(accident_type,Accident_Severity) %>% drop_na(accident_type) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
acctypsev
chart_acctypsev1<- ggplot(data=acctypsev1, aes(x=accident_type, y=t_count, fill=Accident_Severity ))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2), "%")),position=position_stack(vjust=0.9))+labs(y="Percent %", x= "Accident Type") #scale_fill_discrete(name= "Area", labels=c("Highway", "Urban", "Rural"))

chart_acctypsev1
```


```{r}
acctypearea1<- dataa1 %>% select(Accident_Index,Area,accident_type)%>% group_by(accident_type,Area) %>% drop_na(accident_type) %>% summarise(t_count = n())%>% mutate(t_count = t_count/sum(t_count)*100)
acctypearea1
chart_acctypearea1<- ggplot(data=acctypearea1, aes(x=accident_type, y=t_count, fill= Area ))+geom_bar(stat = "identity")+geom_text(aes(label=paste0(round(t_count, 2), "%")),position=position_stack(vjust=0.9))+labs(y="Percent %", x= "Accident Type")+ scale_fill_discrete(name= "Area", labels=c("Highway", "Urban", "Rural"))

chart_acctypearea1
```

